As home solar has grown in popularity, so have solar batteries. According to the SEIA, about 25% of solar systems will be connected to battery storage by 2025 — compared to 6% in 2020. Solar panel batteries are increasingly popular with residential solar systems and solar panels on RVs, campers, and trailers.

Finding the best solar battery is a smart investment for homeowners with solar systems. Solar batteries allow consumers to save energy generated from solar panels to use later. By investing in solar batteries, you can increase your energy independence, lower your monthly electricity costs, and improve the efficiency of your solar panel system.

How to find the right solar battery storage ?

Usable storage capacity (kWh): Your battery capacity is how much energy — measured in kilowatt-hours (kWh) — it can store at once.

Efficiency - charge & discharge losses: The depth of discharge (DoD) is the amount of energy you can draw from a battery before impacting its lifespan. Typically, if you draw 100% of a battery’s charge, it will shorten its lifespan. The average home solar battery is 10 kWh. If that battery has a DoD of 80%, you wouldn’t want to consume more than 8kWh from the battery without allowing it to recharge. The higher the DoD, the more power you can pull from the battery at one time without causing harm.

Battery duration: This measures how many hours a solar battery can run without recharging. Battery duration depends on the type of battery. Keep in mind the less energy you consume, the longer a solar battery will power your home.

Round-trip efficiency: This measures how efficiently a battery can run during one cycle. Like many items in your home, batteries need energy to run. This means they will consume some of the energy that they store. Round-trip efficiency is the percentage of electricity you can get back from the battery after consuming the energy it needs. If the average 10 kWh battery only lets you draw out 8 kWh, that means it has an 80% round-trip efficiency. Round-trip efficiency differs from DoD because it measures one battery cycle vs. DoD measures a battery’s total lifespan.

Battery lifespan and warranty options: A battery’s cycle consists of one charge and one discharge. Once a battery has been through multiple cycles, its ability to hold a charge will decrease. Warranties provide a guarantee that a battery will last a certain amount of cycles or years, often at a guaranteed capacity. For example, a solar battery distributor may offer you a battery with a warranty of 10 years or 5,000 cycles, and guaranteed to retain an 80% battery capacity during that amount of time or cycles.

Battery types: There are several different types of solar batteries, which can impact the efficiency of your solar panels. Read on to learn more about the best types of solar batteries available.

Home solar battery have been on the market for many years and are now available in many varieties and sizes. Due to the rapid advancement in battery technology, GEM Battery has developed many solar cells to suit different energy storage applications.

GEM Battery offers GM, GDC and GzV series solar cells to meet different power needs.

The battery capacity of GM Series are 12V55AH, 12V65AH, 12V80AH, 12V100AH, 12V150AH, 12V200AH, 12V300AH, etc.

The battery capacity of GDC Seriesb are 12V100AH, 12V150AH, 12V200AH, 12V250AH,  12V300AH, 12V400AH, 12V500AH, etc.

The battery capacity of GzV Series are 2V200AH, 2V350AH, 2V400AH, 2V500AH, 2V1000AH, 2V1500AH,  2V2000AH, etc.

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